title: Absorption spectrophotometric, fluorescence, transient absorption and quantum chemical investigations on fullerene/phthalocyanine supramolecular complexes.
abstract: The present paper reports the photophysical investigations on supramolecular interaction of a phthalocyanine derivative, namely, 2,9,16,23-tetra-tert-butyl-29H,31H-Pc (1) with C(60) and C(70) in toluene. The binding constants of the C(60) and C(70) complexes of 1 are estimated to be 27,360 and 25,205 dm(3), respectively. Transient absorption measurements in the visible region establishes that energy transfer from C60*T (and C70*T) to 1 occurs predominantly in toluene which is subsequently confirmed by the consecutive appearance of the triplet states of 1. Quantum chemical calculations at DFT level of theory explore the geometry and electronic structure of the supramolecules and testify the significant redistribution of charge between fullerenes and 1.
authors.affiliation: Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, West Bengal, India.
authors.forename: Anamika
authors.initials: A
authors.lastname: Ray
authors.forename: Kotni
authors.initials: K
authors.lastname: Santhosh
authors.forename: Sumanta
authors.initials: S
authors.lastname: Bhattacharya
mesh_terms: D000042:Absorption; D004560:Electricity; D037741:Fullerenes / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D007700:Kinetics; D008956:Models, Chemical; D010782:Photolysis; D011789:Quantum Theory; D012997:Solvents / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D037741:Fullerenes; D007211:Indoles; D054833:Isoindoles; D012997:Solvents; C013647:phthalocyanine